Fix my arrow indicator

My code so far:

//+------------------------------------------------------------------+
//|  
//| 
//+------------------------------------------------------------------+
#property  copyright ""

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Tomato
#property indicator_color2 SpringGreen



//---- input parameters

 bool Alert_On=false;


 int CountBars=99999999;

//---- buffers
double val1[];
double val2[];

#define SIGNAL_BAR 1
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {

//---- indicator line
   IndicatorBuffers(2);
   
   SetIndexStyle(1,DRAW_ARROW,STYLE_SOLID,2);
   SetIndexArrow(1,241);
   
   SetIndexStyle(0,DRAW_ARROW,STYLE_SOLID,2);
   SetIndexArrow(0,242);
   
   SetIndexBuffer(0,val1);
   SetIndexBuffer(1,val2);

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| AltrTrend_Signal_v2_2                                            |
//+------------------------------------------------------------------+
int start()
  {
   static datetime bar_time=0;
   if(Time[0]==bar_time)
      return(0);
   bar_time=Time[0];
   if(CountBars>=Bars) CountBars=Bars;
   SetIndexDrawBegin(0,Bars-CountBars);
   SetIndexDrawBegin(1,Bars-CountBars);
   int i,shift,counted_bars=IndicatorCounted();


//---- check for possible errors
   if(counted_bars<0) return(-1);

//---- initial zero
   if(counted_bars<1)
     {
      for(i=1;i<=CountBars;i++) val1[CountBars-i]=0.0;
      for(i=1;i<=CountBars;i++) val2[CountBars-i]=0.0;
     }

   for(shift=CountBars; shift>0; shift--)
     {

double buy=iCustom(Symbol(),0,"Reversal 0000",0,shift);
double sell=iCustom(Symbol(),0,"Reversal 0000",1,shift);    
 
     if(buy !=0)
      
      
        {
          val1[shift]=Low[shift]+1000*Point;
         if(shift==1 && Alert_On);
        }

        
      if(sell!=0)
      
      
        {
          val2[shift]=High[shift]-1000*Point;
         if(shift==1 && Alert_On);
        }
  
  
        } 


   return(0);
  } 

The result:

I need indicator which shows arrows at the same time when blue and red dots appear.